I don't how if there is a documented date, but I suspect after Joel sold the business in 1979. They dropped the town names and the nomenclature at that time.
Sasieni like most manufacturers used oil in bowl preparation from the very earliest days of the company. The point of his first patent was to protect a specific method of accelerating the extraction of excess oil through the application of heat:
Sasieni like most manufacturers used oil in bowl preparation from the very earliest days of the company. The point of his first patent was to protect a specific method of accelerating the extraction of excess oil through the application of heat: